var slideIndex = 1;
showSlide();
function showSlide() {
	var slides = document.getElementsByClassName('mySlides');
	var dots = document.getElementsByClassName('dot');
	for (var i = 0; i < slides.length; i++) {
		slides[i].style.display = "none";
	}
	slideIndex++;
	if (slideIndex > slides.length) {
		slideIndex = 1;
	}
	for (var i = 0; i < dots.length; i++) {
		dots[i].className = dots[i].className.replace(" active", "");
	}
	slides[slideIndex - 1].style.display = "block";
	dots[slideIndex - 1].className += " active";
	setTimeout(showSlide, 3000);

}